Scarfing device



A. H STUART.

SCARFING -DEV-ICE May 8, 1945.

Filed Sept. 27, 1943 2 Sheets-Sheet 1 w r.. h U h I A. H. STUARTSCARFING DEVICE May 1945.

2 Sheets-Sheet 2 Filed sept. 27, 1943 .cut onaboardor the; like. y

Patented May 8, 1945 as oifFl 'CE1 I "g;'37`5,447j t l v=1soliii'trriiuGnrw-reti1 ieander .r1.3 siluatjorana '.ltapi'ds, Mich.,j assignor-toJohn Wiidlcoml')v Company, Grand". 'Rapidi.Michgfaicorporation ofMichigan I' Afppiieationseptember 27, i943, seriarNetoaem. i

" I0.Claim`s..

Thisf invention relates@ .to ai mechanism; for

The presentinventlonzisdirectedeto arelatively simple u but; very;practical and.l reflectivey attachment which maybe appliedttoxaibuzzplanen-and with which the scarfingf'isifaccomplishedvrapidly andy theinclined: scarredn surfacesarei; true v and accurate asl they must-'beforf the; attaimnentf oi theproper quality'oiiuint .when-twoof thesurfacesvv are' placed? together' anal-the alined boards glued atsuchsurfaces. HeretoforescarngzsmachinesA for'the' purpose'fhavebeeniexpensive; and

.capziizle'l of use: for vthe oneipurpose: only;y while withvmyinvention aifplaneriot: therproper type may/have' theIattachment:applied*atheretoiat rell ativelysmall expense;A and'wmanufacturer will.

not be!y required to invest a.; relatively,y large amount ini-escarngrmachireawhichiean be iused for no other: 'werke With'myfihventlonf the at#- tachmentf may applied" 'toi at planerfor" thesearng:4 operations;v "and rixay.-r then 1 be removed andizthe: planerused-fore its .regular :werkt-1.. The invention which I have made un.-vderstoodt'from thev followingy descriptionatakenin connection.. with.:tliexaccompa'nyingf: drawings,` rin whichy' L. I` .l

Fig;v 1 is:,a: planvviewfof the scarngfdeviceiof myinvention.

Fig; 2\ is a? longitudinal .verticali section .therethrough showingthescarngfdevice' locatedrover thefbed' ofr au planeri andiillustratingtheiposltion of the parts at the completion oi theisearfmg Fig. 3 isf-aView' similarftovFig.; 2; showngfzthe positionofthefpartsfzbeforetherboard orftheylike has'beenioperated-upon. u' 4Fig. 4- is f atransverse .iverticalase'ctiom substantiallyv oni theplane 4,-4- of- Fig. 3A looking f. inrthe directionindicated bythearrowi t -f y Fig. v5 is van enlarged.- side elevationfoflglthe means`usedlforadjustinglthea device betweenfsuof`oessivetsearngcutsionftheworle,and; n FigiA 6 is .airagmentaryfperspective view-illusliu- 1:27) v trative of the scarflsurface andV its-location with respectvto sidesof. the: member on-whichit4 is produced; l t

Like reference. characters.xreier-toglike partsgm thed-i'iierehtig-u-resI of thedrawinge 'Theihorizontal tablet i withaf-{s1mme-q2`r between sections/ofthe; table atfwhich therotatingplaning cutter :iis locatedare'partsf aabuzzfplaner which areshownfto Jinciiexsite-.the-enviireisunent,nin whieh -`my inventiomis Thescarng device of my invention.4 mountedy upon and Lliestv over theupperside oi said table and cutter;

y inthe. constructienfV of; theiscariingfdev-iee a frame: havingspacedparallel sides 4 connected at one end by a cross memberisflocatediover the tabled'. At the opposite endfofthe frameametalstirrupf 6i with `dewnwmehr` extending ears at i the;V ends'` thereoflextends,betweenand` cohnectedtofsaidside members-f4 oithe frame;` ySup-lpiortingbars` are boltedor otherwise securedone at each-side oftheplaner table I extending there` beyond; at one I end and serving. las.supports` `for the'pivotal. mountingoithe frame; a rodySl-.passinggthroughv the free end portions of thesuppor-t-l ingfba'rsv81v and;` the -ea-rs I of 1 thefstirrup. j It' will bei apparent fromthe -constructionidescribed ,that the frame may bey turned about theaxis of the rodf!! isoA esto-be tilted at itsA opposite end greater orlesszdistances.- above thel table I of` the planer.

`Adjacent the barA 5 a horizontalshaft i0 extends between and passesthrough the side barsr i ofthe frame on whichV spacedl disks- I Il areeccentricallyi; mounted, one y'preferably adizaieenteach offthe'bars 4.;A rotationh of the shaft IIIYewill changefthe positioniof the framedescribed with respect-,toI the; table from itsextrem'e lower positionshown-in Fig. 2 to its-extreme-upper posi- ,"complished: AtxoneV end(1i-the Sha-ft a plate I2 tionshown in Fig. 3,*passing-'throughintermediate positiongwhenfadjusted from. the position ofvvsubstantiallyr circulariormis secured atthe outerrsideoftheadjacentbar- (Fig. 5) An op-` eratingfhandle I3 issecured totheadjacent end off. the .shaft-.f Inland carries a spring actuated Dinlmally `forced inWardbythe spring to engage and'pknob indicated at I4,-the .pin being noragainst the outer sideof theplatell! land to bedrawing thefspring actuated pinfrom anopening the, vshaft may be turnedandfmaybefmoved'a v upon the work.

Atfthe inner side'ofy each of the frame bars 14., l.

xstep to the nextV adjacent opening or to any of the openings which willreceive the pin. The 'eccentrically mounted disks I I are vheld withpressure against the upper side of the table Ir by a weight I5rsuspended by the yrod vIIS rfrom guides in the formv of tracks I8, onefor each bar 4, are permanently secured. A cari-iiageis mounted on andextends Ybetweencsaidfguide 4 tracks. The carriageincludesftwofspacedfsid plates I9 lying in vertical planesone inside` vof lshown in Figlil with the eccentrically mounted tracks.` Betweenthefside plates I9 a horizontal base 2|is located at'the upper side andatv each sidef edge of: 'which' an angleV bar 22v is perf manentlysecured'. `'Said'. angle bars,A at what may Y be termed theirforwardends, are connected by suitable fasteningsi-:shown at 23, to theplates I9. At the opposite ends theplates' I9 are eri-1v tendedvupwardly to provide yvertical'extensions `24''eachhaviriga plurality of?spaced openings therethrough and removable fastenings 25 are used ,tovconnectf'the'bars 22'byV said iastening's passingthrough -selectedopenings fin the 'fparts 24. It is evident'thatth'eangle 'of the base 2Ito ther horizontalrray--be varied 'andadjusted depending'upon'jwmch of'the openings in the partsf2'4 `are"s`el'ected :to receive .the"removablefastening devices 25X" Adjacent therearend of -the'carriageva stirr'uphaving, a lower horizontal bar section y26 Vwith upturn'ed"er'idsflz'I-"one iat' reach-end thereof is mounted, thefpartsA 2'Ipassingupwardlythrough 4suitable*openings in'thebase 2l and thehori-`zontalleg's ofthe' angle bars 2.2.' '-A rockshaft 28 is mounted^on and'extends between theupper ends of theT parts 213, orwhi'ch lshaft spaceddisks or rollers-29 are veecentrically mountedvand bear uponV the"upp'erf sides ofj the V:l'iorizontal tleg's of the angle bars f2.2." -f'IheslflaitV 2 8 'maybe rocked manually' :by afhandle ,301*connectedtherewith' to thereby raise andr'lower the horizontal section126 oi the s'tirrup `forY clamping a boardY between it duringsuchreciprocatory. movements.

opened to provide vcommunication between the v pockets and the pipe l33but the other valves are kept closed. Then upon opening the valve 34 andoperating the air suction means connected therewith air is drawn fromthe pockets covered :by the board 31, and the board pressed tightly byair vpressurei'cfrom beneathagainst the rubber members 32of`th'epocketsf-covered. z 1 f Initially the board will be heldin the positiondisks I I operated so as to lift the free end ofthe "frame to itsuppermost position. The carriage Whicljncarriesthe board is moved backand forth K ponjftlieltrackfgudes I8 and because of theinclinationfoffthekboard 31 to the horizontal, a part ofV the board willbe cut away at its under side reciprocations shaft I0 is turnedor rockedmoving the holding pin I4 from one of the holes in the plate: I2etoE.the next vadjacent.andvthereafter andthe )under side ef the base 2l ofthecar- 50 e p ZI-adjacent its front endat its 'under side'vis.y`p"ovidedlvvith a plurality of longitudinal pockets 1,3I""at thefsidesvof' which are rubber strips 'or bars "32 each of the`pockets'3Ibeing sur; roun'dedvby al frame" of rubber. e A pipe v33 to ybeAconi'iefcted ,with an air 'suctionfapparatus at' its 'rear"endlis'fsupplied:withfa' control valve 13'4, fand at its oppsiteendover thepockets 3l 'with over the bar; 26' of-'the stirrup andpositioned 4with `iivzsforwalcll endsubstant'ially flush 'with thecarriagfejisv clamped in placeby rocking'the shaft 28 ;to`fel'evte`,the`stirrupasfin'Figs. 2l and 3,.it

being yunderstood that the stirrup" will .have beenl lowered whiley thebc'xardisv v'being insertedi'n to lthe others in succession. At the,-'nal .lower-r most positionf 'of the carriagetfas inflig r2) 1` ythescar'nf'gy '.-cut f will l be completed and an inclined surface, as at382provided at thelunder side;` of the `board andlat theinnerendeportion thereof.v Apreleasev i offtheVi suction pockets I1 at-f31I;is; 2pro vided byfopening the valve; ait-34.l and :by rocking the shaft28 to lower the ho1dingestirrupand theA board. `or 'zother 4-nlexnber`uponf.'whichf'fthe scarn'g operation: has been performed .is removed;a1` succeeding board putin `place and thefoperaf tionsrepeated; fItisvto beunde'rstood that with variation" of. the widths o fboards`operated 'upon opened :in `acco'rdancezw'ith the, gnumber; oft` pocketswhich :aref covered yat 'their under sides by.. theboardwhichist'o'be'processed; T o Y'This'scariing attachment ladaptedto'be readily applied to a'suitableplaner isr of a relatively simple andinexpensive constructibnl The :only

things whichlhaveto be added'toftheplanerare -theside "supporting bars 8lwhi'chlpivotally carry O'f courselfby-"arsimple means connected withthe y shaft I Il Aand extending to y' the `machine :operator who handlesthe` WorkY heIv 'alone mayl effectively operate themachin'e, dispensingwith one Aof the menu'sed. f '1 l if The invention y'has t proved' veryz practical v `and useful"an d` with it vtrue and.y accuratel 'scarng israpidly and eiectively accomplished and atfa minimum of cost `for Isuchpurpose, v

*The vinvention is d'ened'in' thev appended claims and'- isto.be"considered comprehensive of processing? machinery for all-nforms'of structure comingwithinfthei'r scope.-

man@ 1- 1. In a construction/ofthe classdescribed,a`

planer having a'rotatingcutter rotatable about a horizontal'axisglocatedfbetween opposite sides" o'f the table and adapted tofprcess work/passed thereovenan open il frame located over the table,

means forpivotally connecting the frame aty one end to said tableadjacent'a. side thereofmanlually controlled means' carried by jsaid`frame Aadj ac'ent` its opposite 'end lforraising vand ovvering `saidopposite end offthe 'frametoj- @sigent 'distances`- with'frespect .Y'to"the' table and Y"thereby Between l agate-44'? 'uit me frameaboutfitspivoter moan-uns; enf-csr'- 'ri'agle' mounted on" andi extending.Lbet-Ween opposite slides VofA said ,fi-ame; for `reci'prccatcrymovements/inthe directionoffthe-lngtli-offthefraine amifcver saidcutter, a base on said". carriage, means' for pivotally' mounting* saidbase adja'- Certtone ,end on said carriage, means'A for` connecting saidbase at its; oppositeel'id to'said carriage at diifrent'vertlcalpositions whereby the angle of the base with respect to the carriage maybe changed, and means for releasably clamping a board or similar articleto the under side of the` base, for the purposes described.

2. In combination, a planer table having a horizontal upper side andhaving a cutter rotatable about a horizontal axis between opposite sidesthereof for processing work passed over the cutter, a frame pivotallymounted lat one end on said table adjacent a side thereof, said frameextending over the table, means for supporting said frame at its freeend portion on said table and for adjusting said free end portion of theframe in a plurality of steps to. different positions above the table,thereby tilting the frame about its pivotal mounting, guide bars, one atthe inner side of each side of the frame, a carriage having sidesmounted for longitudinal movement back and forth lengthwise of the frameon said guide bars and a base between said sides,"

and releasable clamping` a' britse-flocatari1 betweenfsaid carriageside' bars,-

means for `pivotally connecting f *the* base .ati 'its innerVA end't to*said carriageA sidf'xb'ars; removable means adapted to 'f be associatedwitlsaid vertical' extensions' at any `selected openings* therein forsecuring the' base 'atV its outer end, board clamping means for'releasably-- holdinga board z'igainstthe under` side ofE the'l base,Ahorizontal sha-iti rriourltedv on' andextending between 'said side barsof the frame adjacent said frame cross bar, disks eccentrically securedtosaid shaft and means for manually turning the shaft andreleasablyholding it in a plurality of different positions.

5. A construction containing the elements in combination dened in claim4, combined with a weight suspended from said cross bar, and said meansfor turningthe shaft and holding it in adjusted position comprising aplate with a plural- 3. A scarflng attachment for application to a tableof a planer comprising, an open frame having spaced parallel sides, across bar connecting said sides at one end and a bar connecting saidsides at the opposite end, means associated with said last mentioned baradapting the frame to be pivotally connected by said bar at one end to aplaner table at a side thereof, a reciprocable carriage mounted on andlocated between the sides of the frame, said carriage including spacedside members and a generally horizontal base disposed and lyingbetweensaid side members, means for pivotally'connecting said base atits inner end'to the side members of the carriage,

means for adjusting the base at its outer endvertically to differentpositions to thereby change the angle of the lower side of the base withrespect to a planer table over which it may be located, means forclamping a board or similar work to be processed at the under side ofsaid flat bar having downturned ears adapted to,

receive a pivot rod for pivotal mounting of the frame at said endthereof, horizontal guide bars at the inner sides of the side bars ofthe frame, a carriage having spaced side bars with rollers thereon totraverse said guide bars, said side bars at their outer endshavingvertical extensions with vertically spaced openings therethrough,

ity of openings therethrough secured at the outer side of one of theside bars of the frame, a handle secured at the adjacent end of theshaft and a spring actuated pin mounted on said handle processed againstthe under side of a carriage reciprocable over a rotating cuttercomprising, a

-stirrup having a horizontal bar with a 'vertical leg at each endpassing upwardly through said carriage with the bar located below theunder side of the'carriage, a shaft rotatably mounted on and Aextendingthrough said vertical extensions above the carriage, diskseccentricallymounted on said shaft whereby on turning the shaft saidstirrup may be raised or lowered to releasably clamp a board against theunder side of the carriage, and suction means at a distance from saidstirrup for` additionally holding the board against the base by airpressure thereagainst. i

7. In combination with a horizontal planer having abody and a rotatingcutter, of a frame, means for pivotally connecting said frame at one endto said body, means for moving the opposite' end of said frame in adirection away from said cutter, yieldable means for moving saidopposite end of the frame in a direction towards said cutter, a carriagemounted for reciprocation on said frame and over said cutter, andmeansfor releasably clamping work to be processed on said base.

8. The elements of claim 7 in combination in i which said means forreleasably clamping the work includes suction means vfor holding thework against said carriage whereby the suction is applied to the surfaceof the Work remote from the cutter.v y f 9. In combination with a planerhaving a rotating cutter and a xed body, of a frame,l means pivotallyconnecting said'f-rame at one end to said body for tilting movement ofthe frame with respect to the cutter, means for raising and `loweringsaid frame adjacent its opposite'end to tilt it about said pivotalconnection, a'carriage mounted for reciprocation over the cutter on saidframe, said carriage having a base lying lover theA cutter and means forreleasably clamping'work to be processed at the under side of said baseincluding suction means for holding the work against the under side ofthe base to leave the under side of the work free of obstruction forprocessing by said cutter upon moving thereover.

10. A horizontal divided table having `a rotat- A4 i n Aable c utter toturn on `ahorizontal axis between parts of the tab1e,'a frame pivotallymounted at vfied by said frame, s aidcarijiage having a-.bfase .adaptedto be passed ,back and forth over the cutter,` meansI fori-adjusting thebaseof said. a;- riage to different angular positions, andsuotion meansassociated Withsaid basefoi clamping the .inner end. portion of thewoikftable processed against the under sdeof'the `loase tothereby renderthe cutteriree v of obstruction whena'cting

